My father-in-law died, do we need to file his will in texas court

Yes - you have to hire an attorney and file his Will for probate.  The Will is of no force and effect - meaning, it is not binding upon anyone - until it is admitted to probate (found to be valid by a court of law).  You must file it/offer it for probate within 4 years of the date of your father-in-law's death.  You cannot file the Will for probate yourself, because it is considered the unauthorized practice of law; you must hire an attorney to do so, but the procedure is relatively routine from what you have indicated, so should not be overly expensive. We are happy to discuss probating your father-in-law's Will. Call us today at (214) 965-9999 Sincerely, Kevin Spencer Visit out website: www.spencerlawpc.com